I recently had issue an issue with a website not working locally on port 443. I figured out that another service was using this port, which was Skype.
I figured this out by following the steps below that I discovered on the the webpage http://www.tonerdesign.biz/web-design/46-learning-about-netstat.html
- Run the following command on Command prompt:
netstat -aon
- Read through the result to see what is listening to port 443 and take a note of the PID
- Finally open task manager and view processes. Sort processed by PID and locate PID in question. If PID column isnt shown you will need to add it